//
// Copyright © 2025 Hardcore Engineering Inc.
//
// Licensed under the Eclipse Public License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License. You may
// obtain a copy of the License at https://www.eclipse.org/legal/epl-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//
// See the License for the specific language governing permissions and
// limitations under the License.
//

import { Extension } from '@tiptap/core'

export interface IsEmptyContentOptions {
  onChange: (isEmpty: boolean) => void
}

export interface IsEmptyContentStorage {
  isEmpty: boolean
}

export const IsEmptyContentExtension: Extension<IsEmptyContentOptions, IsEmptyContentStorage> =
  Extension.create<IsEmptyContentOptions>({
    name: 'is-empty-content-extension',
    addStorage () {
      return {
        isEmpty: true
      }
    },
    onCreate () {
      this.parent?.()

      this.storage.isEmpty = this.editor.isEmpty
      this.options.onChange(this.storage.isEmpty)
    },
    onUpdate () {
      this.parent?.()

      if (this.storage.isEmpty !== this.editor.isEmpty) {
        this.storage.isEmpty = this.editor.isEmpty

        this.options.onChange(this.storage.isEmpty)
      }
    }
  })
